Annealing cover



Dec. 19, 1939. C. c. CLARK ANNEALING COVER Filed March 10, 19:59

OK. E Wa m a N Patented Dec. 19, I939 2,183,785 ANNEALING COVER Clark, Middletown, Ohio, assignor to rican Rolling Mill Company, Middle- Ohio, a corporation of Ohio Application March 10, 1939, Serial No. 261,041

disclosed, for example, in a patent to E. N. Millan, 2,074,093. This practice has been successful in Walls bulge out from the stack by the fact tha rection of the wardly from the center or away This may be explained annealing cover useles Heretofore, it has bee an added importan In building an anneali ness is of great import rigidity must be satisfa of the rough usage to jected in crane hand ness is also important high heat transfer efii ng cover, therefore, lightance and the question of ctorily handled on account which such covers are subling and the like. from the point of cover.

According to my invention I prefer to take advantage of the known superiority of rolled sections over cast sections, and I overcome the aforementioned defects by preshaping the side and/or end 10 walls to bulge will have the effect of straightening out the sides. The curvature of the walls will vary somewhat in boxes of different sizes and different shapes and will depend upon the material 16 I I have found that a curvatureapproximating a circle of large diameter is sufficient. Preferably the annealing cover will be made of high heat resisting alloys in cases where temperature re-- quirements necessitate such usage;

Other objects ofmyinvention thereforezitfi. clude the provision of a relatively light weight These and other objects of my invention which 30 will be set forth hereinafter, or will be apparent In the figure I have shown the end walls as 40 being straight and. the side walls curved, but it is to be understood that while this construction may be practicable with a long, narrow cover in cases where the cover is more nearly square it may be desirable to curve the end walls also.

Generally speaking, the construction of the annealing cover is quite s1m11ar to that disclosed 2,069,768 and 2,078,718.

Briefly, in the practice of my invention, I provide a cover comprising four Walls, the end walls being indicated at l0 and the side walls (only one of which appears in the drawing) at H. The lateral edges of the end walls will be curved a 55 indicated at l2, and will be welded asindi'cated at l3, to the inner faces of the side walls adjacent the ends. A roof arch indicated generally at H has horizontally disposed lips l5 which are welded as indicated at IE, to the tops of. the side walls ll. End pieces I! formed to correspond to the curvature of the roof flanges l8 and, as shown in the figure, the flanges l8 are welded, as indicated at l9, to the tops of the end walls, and the curved portions of the members I! are welded to the roof arch as indicated at 20. Intermediate the ends I provide one or more bracing sections indicated at 2|, which may be flanged in any desired manner, as indicated at 22, and which are welded to the roof arch as shown at 23.

The curved side walls II are braced by means of the angle sections 24 as seen in the figure. One arm of the angle braces 24 is curved to conform to the curvature of the side walls I I and is welded thereto as shown at 25. It will be clear that the number of members 24 will be determined by the exigencies of the use to which the particular cover is to be put. In order to facilitate crane handling, I may weld to the side walls the handle members 26, any number of which may be provided in any desired location.

It will be understood that in the event it is desired that the end walls also of the annealing cover be curved the only difference will be that the curvature at l2 will have to be altered so as to define the intersection of two curved surfaces. Furthermore, the edges 21 of the side walls II will have to flare outwardly at the base generally on a curvature corresponding to the curvature of the end walls In.

arch are provided with It will be understood that I do not intend to limit myself to an annealing cover having only curved side walls, or an annealing cover in which all sides are curved, nor to an annealing cover made from any particular material, nor to any particular degree of curvature, except as pointed out in the claims which follow, since it will be understood that modifications may be made without departing fromthe spirit of my invention.

Having now fully described my invention what I claim as new and desire to secure by Letters Patent is:

1. An annealing cover comprising vertically corrugated side walls of plate metal, and vertically corrugated end walls of plate metal, an are shaped top of plate metal welded to said side walls and arch members welded to said end walls and to said arcshaped top to close the ends of the cover above said end walls, at least one of said walls being curved throughout its vertical extent to flare outwardly at the bottom.

2. An annealing cover comprising vertically corrugated side walls of plate metal, and vertically corrugated end walls of plate metal, an are shaped top of plate metal welded to said side walls and arch members welded to said end walls and to said arc shaped top to close the ends of the cover above said end walls, at least one of said walls being curved throughout its vertical extent to flare outwardly at the bottom, and

braced members comprising structural shapes vertically disposed and conforming to the curvature of said wall members and welded thereto.

CARLETON C. CLARK. 

